Removing sales advertisements from the mosque

Question:
He says: Honorable Shaykh, may Allah grant you success. The questioner says: In our mosque, some people put up sales advertisements. He says: In our mosque, some people put up advertisements for selling and for looking for lost items. I have warned the imam of the mosque, but he has not moved a finger. Has my conscience been cleared by warning him? And is it permissible for me to remove those writings?

Answer:
If you remove them, it may lead to fitnah (trial, discord or temptation) or evil, but report the action of this imam to those responsible for the mosques. Report it to them so that they will prevent these advertisements.
The reason for this is that they opened the door for posting in the mosque. We prohibit posting in the mosque; neither dhikr (the remembrance of Allah) nor the Qur'an nor anything else is posted in the mosque. This is the sunnah (recommended practice). When they opened the door and started posting dhikr and supplications, and I do not know what else, they opened the door for others. Perhaps misguided sects will come and spread their doctrines in this way. They place books and place misguided pamphlets in the mosque because you opened the door and the space for them. Yes.